Geometry Chart

The Giro Kaya offers the sleek form and smooth function you expect from a women's specific helmet design. Subtle, yet elegant graphics make this helmet one you won't mind wearing on any ride. Women's Universal sizing: (19.5" - 22.5").

The size listed on the website says "Womens Universal Sizing". Simply put, it is way to small to fit even an average woman, let alone a "universal" one. On the helmet box when came, it stated that the size was 50cm-57cm, the same sizing used to describe a childs helmet. THIS SHOULD HAVE BEEN STATED ON THE PRODUCT WEBSITE. As a result of this inaccurate listing, the helmet was returned, with the shipping cost paid for by me.

I bought this helmet for my 3 1/2 year old daughter after reading the size charts and finding the junky helmets in the toy and big-box stores fit the exact same size range. This is a quality helmet and she wont outgrow the styling. Most importantly, she likes wearing it.